Centralized feeding type rake-free concentration device

Abstract

The invention relates to the field of slime water treatment, in particular to a centralized feeding type rake-free concentration device which comprises a feeding assembly, a flow guide assembly and aclean coal collecting assembly, the flow guide assembly further comprises a central groove body, slime water and a chemical agent flow from the upper portion of the central groove body to the inner side wall of the central groove body through the feeding assembly, and then pass through the flow guide assembly and flow to the middle of the central groove body, bubbles after reaction carry fine coalslime to move upwards into the clean coal collecting assembly, the clean coal collecting assembly is located above an outlet of the flow guide assembly, and the clean coal collecting assembly is sequentially provided with a central material collecting area, a bubble removing area and a flow guide settling area from middle to outside. The centralized feeding type rake-free concentration device hasthe advantages that the structure of a traditional multi-stage concentration tank is integrated, and the occupied area of the traditional multi-stage concentration tank is greatly reduced.

Description

[0001] This application claims a divisional application of "A Backflow Multi-stage Settling Rakeless Concentrator" with the application number 201911283951.3 filed on December 13, 2019, and the original acceptance institution is in China. technical field [0002] The invention relates to the field of coal slime water treatment, in particular to a centralized feeding type non-rake thickening device. Background technique [0003] In the coal washing process, the slime water treatment, as the finishing link of the washing process, is the key to the effective collection and utilization of coal slime and the closed cycle of washing water, and the thickening device as the carrier of coal slime water treatment and the key equipment for processing has been obtained It is widely used and is of great significance to the closed circulation of washing water, the full utilization of underflow concentrate and environmental protection. [0004] With the integration and large-scale of coal ...

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Problems solved by technology

[0004] With the integration and large-scale of coal washing plants, the processing capacity has been greatly increased, and the output of coal slime water and the content of fine slime in coal slime water have also increased significantly. Some equipment has reached the specifications of 45m and above, but due to the finer fine mud and the increase in processing capacity, the settlement time period is poor, and the settlement effect is poor. The fine mud in the washing circulating water cannot be effectively removed, which will cause coal The quality of washing is seriously affected, so many coal preparation plants have added two-stage concentration or even three-stage concentration to further purify the washing circulating water, which will take up a lot of land, and there are still residual flotation stages in the slime water that have not been completely The recovered coal foam, resulting in the waste of clean coal, resulting in economic losses

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